Container and arrangement for braun tubes



April 19, 1938. K. SCHLESINGER 2,114,612

CONTAINER AND ARRANGEMENT FOR BRAUN [,UBES

Filed May 19, 1934 HI- l Jnvenfor:

Patented Apr. 19, 1938 UNITED STATES anger PATENT QEFEQE CONTAINER AND ARRANGEMENT FOR BRAUN TUBES Kurt Schlesinger, Berlin, Germany 1 Claim.

The object of the invention is a method of handling Braun tubes and an arrangement for carrying out this method.

According to the invention, the Braun tube, immediately after its completion, is placed in a container, which is so equipped that even in the case of implosion of the tube fragments of glass cannot be flung out of the same. According to the invention the tube is despatched (consigned) and fitted into television arrangements and the like together with the container, so that the person using the same does not require to enter into contact at all with the unsafeguarded tube, and accordingly does not incur any danger of being injured by fragments of glass or the like in the case of implosion. The tube, according to the invention, may be connected with the container in such fashion that release of the connection cannot be performed, or only with extreme diffioulty, by unauthorized persons.

As container there may be employed in accordance with the invention either a metallic container adapted to the form of the tube, or alsopreferably-a container composed of two cylinders, of which the lower one possesses a somewhat greater diameter than the neck of the bulb and the upper one a somewhat greater diameter than the end portion of the bulb.

In the interior of the container there are provided in accordance with the invention padded bearings for the tube at at least two points, against which bearings the tube firmly rests. Between the end of the tube and the piece of glass closing the container there is preferably also furnished about the edge a pad, which is so pressed in that the tube, after the fitting of the piece of glass, is unable to move in the container.

According to the invention, the wall of the container is made of a material which screens off external magnetic fields. It has been found that even thin sheet iron of approximately -l mm. thickness is adequate for this purpose.

A form of embodiment of the arrangement according to the invention is illustrated by way of example in the drawing.

In the same I is a Braun tube (i. e., a Braun tube of the usual type containing means for producing a cathode ray, means for concentrating the ray, means for controlling the intensity of the ray, and a picture receiving screen, as they are used for television and oscillographic purposes), 9 the metallic container composed of the two cylinders 2 and 3, I and 8 are the bearing pads, 4 is an annular pad which rests against the end of the tube and is held by the bearing ring 5 engaging about the edge of the cylinder 2, and 6 is the piece of glass, which closes the container at the front and bears against the ring 5, and is pressed against the ring 5 and thus held 5 in position by the ring ll, which also engages about the edge of the cylinder and is secured for example by means of a bayonet joint or if desired is screwed or welded on to the cylinder 2. Between the ring it and the piece 10 of glass there may also be furnished if desired an additional pad, which may consist, for example, of rubber.

At one or more points of the cylinder 2 there are provided in accordance with the invention 15 apertures Ill, which are preferably covered with a fine-mesh guard and ensure that the air will flow rapidly into the cylinder 2 and accordingly into the tube l in the event of implosion, and in this manner protect the sheet 6 against exces- 20 sive strain.

The Braun tube is mounted in such fashion on its elastic holding means in the container according to the invention that the same will withstand even the longest journey without danger. The 25 ring H may be connected with the container in such manner (for instance by welding) that release of the same by unauthorized persons is impossible.

According to the invention, the Braun tube 30 constitutes with the container a rigid unit, which may be consigned and fitted as a whole in television receiver or the like arrangements.

I claim:

In combination a Braun tube comprising an 35 evacuated bulb, a picture receiving screen arranged at the bottom of said bulb, means for producing a cathode ray, means for controlling, concentrating and deflecting said'cathode ray, all of said means being mounted inside said bulb, fur- 40 ther means for connecting the first said means with their respective circuits, said further means projecting from the lower end of the neck of said bulb, a metallic tube surrounding said bulb, padding means for mounting said bulb immovably in 5 said metallic tube, screened apertures in the wall of said metallic tube, a bearing ring engaging about the bottom of said bulb, a glass window resting on said bearing ring and a metallic ring indetachably connected with said metallic tube 50 for pressing said glass window against said bearing ring.

KURT SCI-ILESINGER. 

